********** activity with my card, while the card is in my possession in a different province

I am presently in Limpopo. I was shocked to get a message thanking me for shopping done at Irene mall for an amount of R4729.92. When I tried to call their customer call centre, the machine said it was outside their operating hours. A few minutes later I get an sms thanking me for purchase for the amount of R2963.04 at Mall of Africa. The last straw was another sms for R870.94 at Sandton city. Like, I am sitting with my ID and account card in Limpopo but someone is busy having a shopping spree. How does that happen? Because, everytime I buy, my card gets swiped, then I get a till slip which I must sign. The teller compares the signature on the back of the card, with the one I just signed. So, excuse me if I don't understand how a person bypassed all that. I will not be wrong to say this is an inside job. I am talking about an account which has been paid up for over a year, has not been used in a year. I am really disappointed with Mr Price.